microsoft / microsoft/markitdown
markitdown-mcp: server process dies on invalid_id / oversized input (Claude Code + Cursor)
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- Dominant language
- Python
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- Avg merge
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Description
While running through an MCP execution harness I built (usethrone/throne-ci), I hit a reproducible crash and wanted to share the full trace.
Running markitdown-mcp through my MCP harness (usethrone/throne-ci), the server process dies on error-handling probes:
text
invalid_id: died
oversized_input: died (stdin pipe closed)
recovery: died
Reproduces under both Claude Code and Cursor. connect/discover/schemas/reconnect all pass. Sealed record: [link]. Happy to re-run after a fix.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing markitdown-mcp through the usethrone/throne-ci harness with the invalid_id and oversized_input probes, capturing the server's stderr and exit behavior. Compare these with the passing connect, discover, schemas, and reconnect probes; done means the server stays alive through both error cases and recovery works under Claude Code and Cursor.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend-api-design
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100